Agilent Technologies FS2010 - Manual (Page 27)

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Captured data is displayed as shown in the following figure.
Use of Eye Finder can greatly enhance your timing analysis by helping
find the data valid window of every signal on the bus with respect to the
clock. You can compare the results of Eye Finder to your simulation and
the PCI-X specification to see if your system operates within expected
setup and hold margins
. Eye Finder can be found in the setup and hold
area of your logic analysis card FORMAT menu. The configuration file
for Eyefinder, CP201_3 , has clock qualifiers defined to insure that data
is valid during measurements.
EyeScan features are available with 16753/4/5/6 cards that provide
information about signal voltage as well timing windows
The Waveform
Display
Use of
EyeFinder/Eyescan